Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd38d605c0cf783e91afab36f11d8702e7fe38bfdb6721dbc0c3f974fc5ec0f75' 
  AND token = 'vraMwfXka7leuDBq6JnQfE6SFws/bv3YBOm4O8GaBw0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}